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    Latently crosslinking aqueous dispersions containing a polyurethane
    1.
    发明授权
    Latently crosslinking aqueous dispersions containing a polyurethane 有权
    含有聚氨酯的水性分散体

    公开(公告)号：US06767954B2

    公开(公告)日：2004-07-27

    申请号：US10113296

    申请日：2002-04-02

    申请人： Bernd Meyer-Roscher ,  Andre Burghardt ,  Ulrike Licht

    发明人： Bernd Meyer-Roscher ,  Andre Burghardt ,  Ulrike Licht

    IPC分类号： C08J300

    CPC分类号： C08G18/797 ,  C08G18/0828 ,  C08G18/10 ,  C08L33/00 ,  C09J175/04 ,  Y10T428/31551

    摘要： Latently crosslinking aqueous polyurethane dispersions contain I) a disperse phase (P.I) containing Ia) a polyurethane (Ia) which, in addition to hydrophilic groups which produce water dispersibility, carries carbodiimide groups and substantially no carboxyl groups or Ib) a physical mixture of Ibi) a polyurethane (Ibi) which carries hydrophilic groups which produce water dispersibility and carries substantially no carbodiimide or carboxyl groups, and Ibii) a carbodiimide (Ibii) which carries substantially no hydrophilic groups which produce water dispersibility, and II) a disperse phase (P.II) containing another polymer (II) which carries substantially no carbodiimide groups and is substantially derived from II.1) from 30 to 99.98% by weight of main monomers selected from C1- to C20-alkyl (meth)acrylates, vinyl esters of carboxylic acids of up to 20 carbon atoms, vinylaromatics of up to 20 carbon atoms, ethylenically unsaturated nitriles, vinyl halides and aliphatic hydrocarbons having 2 to 8 carbon atoms and 1 or 2 double bonds, II.2) from 0.01 to 20% by weight of a carboxylic acid having an olefinic double bond and II.3) from 0.01 to 10% by weight of a monomer differing from the monomers II.1 and II.2 and selected from the group consisting of N-methylol (meth)acrylamide (AMOL), (MAMOL), acetoacetoxyethyl (meth)acrylate, diacetone (meth)acrylamide, glycidyl (meth)acrylate, ureido (meth)acrylate and (meth)acrylic anhydride, and II.4) if required, monomers differing from (II.1), (II.2) and (II.3) and capable of free radical polymerization.

    摘要翻译： 潜在交联的水性聚氨酯分散体含有I）含有I）聚氨酯（Ia）的分散相（PI），除了产生水分散性的亲水基团之外，聚氨酯（Ia）还含有碳二亚胺基团并且基本上不含羧基，或Ib）Ibi的物理混合物 Ibi），其携带产生水分散性且基本上不携带碳二亚胺或羧基的亲水基团，和Ibii）基本上不具有产生水分散性的亲水基团的碳二亚胺（Ibii），和II）含有另一种聚合物的分散相（P.II） （II），其基本上不携带碳二亚胺基团，并且基本上衍生自II.1）30至99.98重量％的选自C 1 -C 20烷基（甲基）丙烯酸酯的主要单体，至多20个碳原子的羧酸的乙烯基酯 原子，高达20个碳原子的乙烯基芳烃，烯属不饱和腈，乙烯基卤化物和具有2至8个碳原子的脂族烃 碳原子和1或2个双键，II.2）0.01至20重量％的具有烯属双键的羧酸和II.3）0.01至10重量％的不同于单体II.1的单体 选自N-羟甲基（甲基）丙烯酰胺（AMOL），（MAMOL），（甲基）丙烯酸乙酰乙酰氧基乙酯，双丙酮（甲基）丙烯酰胺，（甲基）丙烯酸缩水甘油酯，脲基（甲基）丙烯酸酯和 （甲基）丙烯酸酐，以及II.4）如果需要，不同于（II.1），（II.2）和（II.3）并且能够进行自由基聚合的单体。